Nested router breaks DefaultRouter index page

[chibisov]

DefaultRouter tries to reverse nested routes and breaks with error:

Reverse for 'action-categories-action-list' with arguments '()' and keyword arguments '{}' not found.

[kevin-brown]

This is an issue I tried to tackle a while back and have not yet found a good way to get around it. Right now, in my current implementation of this, we are just hiding nested urls (expecting that users will link to them in other places).

https://github.com/kevin-brown/drf-nested-viewsets/blob/a9642a8f9c0e866a542fa5f8d6747dc02ee05997/rest_nested_viewsets/routers.py

I have no idea if this is the "right" way to go about it, but the DefaultRouter is commonly used in cases where APIs are entirely HATEOAS-driven.

[chibisov]

@kevin-brown, how can we show nested resources in root page? For any nested resource we need parent PKs to compose uri. I think we just should handle NoReverseMatch, like you did.